In accordance with the Bohr's model, find the quantum number that characterises the earth's revolution around the sun in an orbit of radius `1.5xx10^11m` with orbital speed `3xx10^4ms^-1`.

The earth moves round the sun in a near circular orbit of radius 1.5 xx 10^11 m. Its centripetal acceleration is

In the Bohr model of the H_2 atom, linear velocity is 2.190xx10^16 frac(m)(sec) . when it is in the 1st orbit of radius 0.528 A^@ . Calculate the orbital magnetic moment.

In the Bohr model of the hydrogen atom, the electron circuulates around the nucleus in a path of radius 5xx10^-11m at a frequency of 6.8xx10^15Hz . a. What value of magnetic field is set up at the centre of the orbit? b. What is the equivalent magnetic dipole moment?

Estimate the de-Broglie wavelength associated with the motion of earth orbiting around the sum at a speed of 3 xx 10^6 m//s .

The binding energy of a satellite revolving around planet in a circular orbit is 3xx10^9 J. Its kinetic energy is

Find the velocity of the electron in the ground state of hydrogen atom.Hence find the velocities when the electron is in the second and fourth orbit.(Radius of the first Bohr orbit = 0.53xx10^-10m , mass of electron= 9.1xx10^-31 kg )

In the Bohr model of the H2 atom, linear velocity is 2.190xx10^16 frac(m)(sec) . when it is in the 1st orbit of radius 0.528 A^@ . Calculate the equivalent current.

Solve the following examples / numerical problems: The time taken by the earth to complete on revolution around the Sun is 3.156 xx 10^7 s. The distance between the earth and the sun is 1.5 xx 10^11 m . Find the speed of revolution of the earth.

The angular diameter of the sun is 1920". If the distance of the sun from the earth is 1.5xx10^(11) m, what is the linear diameter of the sun ?